A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favours.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

In a 60 Minutes online exclusive, reporter Liz Hayes quizzed Australian Prime Minister Malcolm Turnbull on his relationship with the unpredictable Twitter aficionado and US president Donald Trump ahead of their meeting at the White House Friday.

Dickson denies LNP document download

Queensland state MP Steve Dickson has hit back at claims his staff downloaded internal Liberal National Party documents when he jumped ship to One Nation.

Mr Dickson appeared in his electorate of Buderim with One Nation leader Pauline Hanson on Friday to announce he was switching to the minor party over the issue of medicinal cannabis.

The LNP alleges 52 documents were downloaded from its servers on Thursday, just after Ms Hanson's office called the media conference for the following day, from a login associated with Mr Dickson.

Lawyers for the LNP issued letters to Mr Dickson and his staff demanding they sign agreements not to release the information contained in the documents or show it to anyone outside the party.

In return, lawyers for Mr Dickson and One Nation gave assurances that any material taken by Mr Dickson's office will be destroyed.

But Mr Dickson himself took to his Facebook page on Sunday, releasing a short video showing him walking the streets of his Sunshine Coast electorate, and claiming the LNP's version of events is a "distortion of the truth".

"Let me make that point extremely clear- we've stolen nothing, my staff have stolen nothing, One Nation has stolen nothing and I've stolen nothing," Mr Dickson said in the video.